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Viewing changes to bzrlib/tests/blackbox/test_merge.py

  • Committer: Ian Clatworthy
  • Date: 2007-08-13 14:16:53 UTC
  • mto: (2733.1.1 ianc-integration)
  • mto: This revision was merged to the branch mainline in revision 2734.
  • Revision ID: ian.clatworthy@internode.on.net-20070813141653-3cbrp00xowq58zv1
Added mini tutorial

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bzrlib/tests/blackbox/test_merge.py
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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#
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# Author: Aaron Bentley <aaron.bentley@utoronto.ca>
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25
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from bzrlib.branch import Branch
26
26
from bzrlib.bzrdir import BzrDir
27
27
from bzrlib.conflicts import ConflictList, ContentsConflict
28
 
from bzrlib.osutils import abspath, file_kind, pathjoin
 
28
from bzrlib.osutils import abspath, file_kind
29
29
from bzrlib.tests.blackbox import ExternalBase
30
30
import bzrlib.urlutils as urlutils
31
31
from bzrlib.workingtree import WorkingTree
33
33
 
34
34
class TestMerge(ExternalBase):
35
35
 
36
 
    def example_branch(self, path='.'):
37
 
        tree = self.make_branch_and_tree(path)
38
 
        self.build_tree_contents([
39
 
            (pathjoin(path, 'hello'), 'foo'),
40
 
            (pathjoin(path, 'goodbye'), 'baz')])
41
 
        tree.add('hello')
42
 
        tree.commit(message='setup')
43
 
        tree.add('goodbye')
44
 
        tree.commit(message='setup')
45
 
        return tree
46
 
 
47
 
    def create_conflicting_branches(self):
48
 
        """Create two branches which have overlapping modifications.
49
 
 
50
 
        :return: (tree, other_branch) Where merging other_branch causes a file
51
 
            conflict.
52
 
        """
53
 
        builder = self.make_branch_builder('branch')
54
 
        builder.build_snapshot('rev1', None,
55
 
            [('add', ('', 'root-id', 'directory', None)),
56
 
             ('add', ('fname', 'f-id', 'file', 'a\nb\nc\n'))])
57
 
        builder.build_snapshot('rev2other', ['rev1'],
58
 
            [('modify', ('f-id', 'a\nB\nD\n'))])
59
 
        other = builder.get_branch().bzrdir.sprout('other').open_branch()
60
 
        builder.build_snapshot('rev2this', ['rev1'],
61
 
            [('modify', ('f-id', 'a\nB\nC\n'))])
62
 
        tree = builder.get_branch().create_checkout('tree', lightweight=True)
63
 
        return tree, other
 
36
    def example_branch(test):
 
37
        test.run_bzr('init')
 
38
        file('hello', 'wt').write('foo')
 
39
        test.run_bzr('add hello')
 
40
        test.run_bzr('commit -m setup hello')
 
41
        file('goodbye', 'wt').write('baz')
 
42
        test.run_bzr('add goodbye')
 
43
        test.run_bzr('commit -m setup goodbye')
64
44
 
65
45
    def test_merge_reprocess(self):
66
46
        d = BzrDir.create_standalone_workingtree('.')
69
49
 
70
50
    def test_merge(self):
71
51
        from bzrlib.branch import Branch
72
 
 
73
 
        a_tree = self.example_branch('a')
74
 
        ancestor = a_tree.branch.revno()
75
 
        b_tree = a_tree.bzrdir.sprout('b').open_workingtree()
76
 
        self.build_tree_contents([('b/goodbye', 'quux')])
77
 
        b_tree.commit(message="more u's are always good")
78
 
 
79
 
        self.build_tree_contents([('a/hello', 'quuux')])
 
52
        
 
53
        os.mkdir('a')
 
54
        os.chdir('a')
 
55
        self.example_branch()
 
56
        ancestor = Branch.open('.').revno()
 
57
        os.chdir('..')
 
58
        self.run_bzr('branch a b')
 
59
        os.chdir('b')
 
60
        file('goodbye', 'wt').write('quux')
 
61
        self.run_bzr(['commit',  '-m',  "more u's are always good"])
 
62
 
 
63
        os.chdir('../a')
 
64
        file('hello', 'wt').write('quuux')
80
65
        # We can't merge when there are in-tree changes
81
 
        os.chdir('a')
82
66
        self.run_bzr('merge ../b', retcode=3)
83
67
        a = WorkingTree.open('.')
84
68
        a_tip = a.commit("Like an epidemic of u's")
85
69
        self.run_bzr('merge ../b -r last:1..last:1 --merge-type blooof',
86
70
                    retcode=3)
87
71
        self.run_bzr('merge ../b -r last:1..last:1 --merge-type merge3')
88
 
        a_tree.revert(backups=False)
 
72
        self.run_bzr('revert --no-backup')
89
73
        self.run_bzr('merge ../b -r last:1..last:1 --merge-type weave')
90
 
        a_tree.revert(backups=False)
91
 
        self.run_bzr('merge ../b -r last:1..last:1 --merge-type lca')
92
 
        a_tree.revert(backups=False)
 
74
        self.run_bzr('revert --no-backup')
93
75
        self.run_bzr_error(['Show-base is not supported for this merge type'],
94
76
                           'merge ../b -r last:1..last:1 --merge-type weave'
95
77
                           ' --show-base')
96
 
        a_tree.revert(backups=False)
 
78
        self.run_bzr('revert --no-backup')
97
79
        self.run_bzr('merge ../b -r last:1..last:1 --reprocess')
98
 
        a_tree.revert(backups=False)
 
80
        self.run_bzr('revert --no-backup')
99
81
        self.run_bzr('merge ../b -r last:1')
100
82
        self.check_file_contents('goodbye', 'quux')
101
83
        # Merging a branch pulls its revision into the tree
103
85
        b_tip = b.last_revision()
104
86
        self.failUnless(a.branch.repository.has_revision(b_tip))
105
87
        self.assertEqual([a_tip, b_tip], a.get_parent_ids())
106
 
        a_tree.revert(backups=False)
 
88
        self.run_bzr('revert --no-backup')
107
89
        out, err = self.run_bzr('merge -r revno:1:./hello', retcode=3)
108
90
        self.assertTrue("Not a branch" in err)
109
91
        self.run_bzr('merge -r revno:%d:./..revno:%d:../b'
110
92
                    %(ancestor,b.revno()))
111
 
        self.assertEquals(a.get_parent_ids(),
 
93
        self.assertEquals(a.get_parent_ids(), 
112
94
                          [a.branch.last_revision(), b.last_revision()])
113
95
        self.check_file_contents('goodbye', 'quux')
114
 
        a_tree.revert(backups=False)
 
96
        self.run_bzr('revert --no-backup')
115
97
        self.run_bzr('merge -r revno:%d:../b'%b.revno())
116
98
        self.assertEquals(a.get_parent_ids(),
117
99
                          [a.branch.last_revision(), b.last_revision()])
119
101
        self.run_bzr('merge ../b -r last:1')
120
102
        self.assertEqual([a_tip], a.get_parent_ids())
121
103
 
122
 
    def test_merge_defaults_to_reprocess(self):
123
 
        tree, other = self.create_conflicting_branches()
124
 
        # The default merge algorithm should enable 'reprocess' because
125
 
        # 'show-base' is not set
126
 
        self.run_bzr('merge ../other', working_dir='tree',
127
 
                     retcode=1)
128
 
        self.assertEqualDiff('a\n'
129
 
                             'B\n'
130
 
                             '<<<<<<< TREE\n'
131
 
                             'C\n'
132
 
                             '=======\n'
133
 
                             'D\n'
134
 
                             '>>>>>>> MERGE-SOURCE\n',
135
 
                             tree.get_file_text('f-id'))
136
 
 
137
 
    def test_merge_explicit_reprocess_show_base(self):
138
 
        tree, other = self.create_conflicting_branches()
139
 
        # Explicitly setting --reprocess, and --show-base is an error
140
 
        self.run_bzr_error(['Cannot do conflict reduction and show base'],
141
 
                           'merge ../other --reprocess --show-base',
142
 
                           working_dir='tree')
143
 
 
144
 
    def test_merge_override_reprocess(self):
145
 
        tree, other = self.create_conflicting_branches()
146
 
        # Explicitly disable reprocess
147
 
        self.run_bzr('merge ../other --no-reprocess', working_dir='tree',
148
 
                     retcode=1)
149
 
        self.assertEqualDiff('a\n'
150
 
                             '<<<<<<< TREE\n'
151
 
                             'B\n'
152
 
                             'C\n'
153
 
                             '=======\n'
154
 
                             'B\n'
155
 
                             'D\n'
156
 
                             '>>>>>>> MERGE-SOURCE\n',
157
 
                             tree.get_file_text('f-id'))
158
 
 
159
 
    def test_merge_override_show_base(self):
160
 
        tree, other = self.create_conflicting_branches()
161
 
        # Setting '--show-base' will auto-disable '--reprocess'
162
 
        self.run_bzr('merge ../other --show-base', working_dir='tree',
163
 
                     retcode=1)
164
 
        self.assertEqualDiff('a\n'
165
 
                             '<<<<<<< TREE\n'
166
 
                             'B\n'
167
 
                             'C\n'
168
 
                             '||||||| BASE-REVISION\n'
169
 
                             'b\n'
170
 
                             'c\n'
171
 
                             '=======\n'
172
 
                             'B\n'
173
 
                             'D\n'
174
 
                             '>>>>>>> MERGE-SOURCE\n',
175
 
                             tree.get_file_text('f-id'))
176
 
 
177
104
    def test_merge_with_missing_file(self):
178
105
        """Merge handles missing file conflicts"""
179
 
        self.build_tree_contents([
180
 
            ('a/',),
181
 
            ('a/sub/',),
182
 
            ('a/sub/a.txt', 'hello\n'),
183
 
            ('a/b.txt', 'hello\n'),
184
 
            ('a/sub/c.txt', 'hello\n')])
185
 
        a_tree = self.make_branch_and_tree('a')
186
 
        a_tree.add(['sub', 'b.txt', 'sub/c.txt', 'sub/a.txt'])
187
 
        a_tree.commit(message='added a')
188
 
        b_tree = a_tree.bzrdir.sprout('b').open_workingtree()
189
 
        self.build_tree_contents([
190
 
            ('a/sub/a.txt', 'hello\nthere\n'),
191
 
            ('a/b.txt', 'hello\nthere\n'),
192
 
            ('a/sub/c.txt', 'hello\nthere\n')])
193
 
        a_tree.commit(message='Added there')
194
 
        os.remove('a/sub/a.txt')
195
 
        os.remove('a/sub/c.txt')
196
 
        os.rmdir('a/sub')
197
 
        os.remove('a/b.txt')
198
 
        a_tree.commit(message='Removed a.txt')
199
 
        self.build_tree_contents([
200
 
            ('b/sub/a.txt', 'hello\nsomething\n'),
201
 
            ('b/b.txt', 'hello\nsomething\n'),
202
 
            ('b/sub/c.txt', 'hello\nsomething\n')])
203
 
        b_tree.commit(message='Modified a.txt')
204
 
        os.chdir('b')
 
106
        os.mkdir('a')
 
107
        os.chdir('a')
 
108
        os.mkdir('sub')
 
109
        print >> file('sub/a.txt', 'wb'), "hello"
 
110
        print >> file('b.txt', 'wb'), "hello"
 
111
        print >> file('sub/c.txt', 'wb'), "hello"
 
112
        self.run_bzr('init')
 
113
        self.run_bzr('add')
 
114
        self.run_bzr(['commit', '-m', 'added a'])
 
115
        self.run_bzr('branch . ../b')
 
116
        print >> file('sub/a.txt', 'ab'), "there"
 
117
        print >> file('b.txt', 'ab'), "there"
 
118
        print >> file('sub/c.txt', 'ab'), "there"
 
119
        self.run_bzr(['commit', '-m', 'Added there'])
 
120
        os.unlink('sub/a.txt')
 
121
        os.unlink('sub/c.txt')
 
122
        os.rmdir('sub')
 
123
        os.unlink('b.txt')
 
124
        self.run_bzr(['commit', '-m', 'Removed a.txt'])
 
125
        os.chdir('../b')
 
126
        print >> file('sub/a.txt', 'ab'), "something"
 
127
        print >> file('b.txt', 'ab'), "something"
 
128
        print >> file('sub/c.txt', 'ab'), "something"
 
129
        self.run_bzr(['commit', '-m', 'Modified a.txt'])
205
130
        self.run_bzr('merge ../a/', retcode=1)
206
 
        self.failUnlessExists('sub/a.txt.THIS')
207
 
        self.failUnlessExists('sub/a.txt.BASE')
 
131
        self.assert_(os.path.exists('sub/a.txt.THIS'))
 
132
        self.assert_(os.path.exists('sub/a.txt.BASE'))
208
133
        os.chdir('../a')
209
134
        self.run_bzr('merge ../b/', retcode=1)
210
 
        self.failUnlessExists('sub/a.txt.OTHER')
211
 
        self.failUnlessExists('sub/a.txt.BASE')
 
135
        self.assert_(os.path.exists('sub/a.txt.OTHER'))
 
136
        self.assert_(os.path.exists('sub/a.txt.BASE'))
212
137
 
213
138
    def test_merge_remember(self):
214
 
        """Merge changes from one branch to another, test submit location."""
 
139
        """Merge changes from one branch to another and test parent location."""
215
140
        tree_a = self.make_branch_and_tree('branch_a')
216
141
        branch_a = tree_a.branch
217
142
        self.build_tree(['branch_a/a'])
236
161
        out = self.run_bzr('merge', retcode=3)
237
162
        self.assertEquals(out,
238
163
                ('','bzr: ERROR: No location specified or remembered\n'))
239
 
 
240
 
        # test uncommitted changes
 
164
        # test implicit --remember when no parent set, this merge conflicts
241
165
        self.build_tree(['d'])
242
166
        tree_b.add('d')
243
 
        self.run_bzr_error(['Working tree ".*" has uncommitted changes'],
244
 
                           'merge')
245
 
 
246
 
        # merge should now pass and implicitly remember merge location
 
167
        out = self.run_bzr('merge ../branch_a', retcode=3)
 
168
        self.assertEquals(out,
 
169
                ('','bzr: ERROR: Working tree has uncommitted changes.\n'))
 
170
        self.assertEquals(abspath(branch_b.get_parent()), abspath(parent))
 
171
        # test implicit --remember after resolving conflict
247
172
        tree_b.commit('commit d')
248
 
        out, err = self.run_bzr('merge ../branch_a')
249
 
 
 
173
        out, err = self.run_bzr('merge')
 
174
        
250
175
        base = urlutils.local_path_from_url(branch_a.base)
251
 
        self.assertEndsWith(err, '+N  b\nAll changes applied successfully.\n')
252
 
        self.assertEquals(abspath(branch_b.get_submit_branch()),
253
 
                          abspath(parent))
254
 
        # test implicit --remember when committing new file
255
 
        self.build_tree(['e'])
256
 
        tree_b.add('e')
257
 
        tree_b.commit('commit e')
258
 
        out, err = self.run_bzr('merge')
259
 
        self.assertStartsWith(err,
260
 
                          'Merging from remembered submit location %s\n' % (base,))
 
176
        self.assertEquals(out, 'Merging from remembered location %s\n' % (base,))
 
177
        self.assertEquals(err, '+N  b\nAll changes applied successfully.\n')
 
178
        self.assertEquals(abspath(branch_b.get_parent()), abspath(parent))
261
179
        # re-open tree as external run_bzr modified it
262
180
        tree_b = branch_b.bzrdir.open_workingtree()
263
181
        tree_b.commit('merge branch_a')
265
183
        out, err = self.run_bzr('merge ../branch_c --remember')
266
184
        self.assertEquals(out, '')
267
185
        self.assertEquals(err, '+N  c\nAll changes applied successfully.\n')
268
 
        self.assertEquals(abspath(branch_b.get_submit_branch()),
 
186
        self.assertEquals(abspath(branch_b.get_parent()),
269
187
                          abspath(branch_c.bzrdir.root_transport.base))
270
188
        # re-open tree as external run_bzr modified it
271
189
        tree_b = branch_b.bzrdir.open_workingtree()
274
192
    def test_merge_bundle(self):
275
193
        from bzrlib.testament import Testament
276
194
        tree_a = self.make_branch_and_tree('branch_a')
277
 
        self.build_tree_contents([('branch_a/a', 'hello')])
 
195
        f = file('branch_a/a', 'wb')
 
196
        f.write('hello')
 
197
        f.close()
278
198
        tree_a.add('a')
279
199
        tree_a.commit('message')
280
200
 
281
201
        tree_b = tree_a.bzrdir.sprout('branch_b').open_workingtree()
282
 
        self.build_tree_contents([('branch_a/a', 'hey there')])
 
202
        f = file('branch_a/a', 'wb')
 
203
        f.write('hey there')
 
204
        f.close()
283
205
        tree_a.commit('message')
284
206
 
285
 
        self.build_tree_contents([('branch_b/a', 'goodbye')])
 
207
        f = file('branch_b/a', 'wb')
 
208
        f.write('goodbye')
 
209
        f.close()
286
210
        tree_b.commit('message')
287
211
        os.chdir('branch_b')
288
212
        self.run_bzr('bundle ../branch_a -o ../bundle')
317
241
        self.run_bzr('merge a --uncommitted -d b')
318
242
        self.failUnlessExists('b/file_1')
319
243
        self.failUnlessExists('b/file_ii')
320
 
        tree_b.revert()
 
244
        tree_b.revert([])
321
245
        self.run_bzr_error(('Cannot use --uncommitted and --revision',),
322
246
                           'merge /a --uncommitted -r1 -d b')
323
247
 
324
 
    def test_merge_uncommitted_file(self):
325
 
        """It should be possible to merge changes from a single file."""
326
 
        tree_a = self.make_branch_and_tree('tree_a')
327
 
        tree_a.commit('initial commit')
328
 
        tree_a.bzrdir.sprout('tree_b')
329
 
        self.build_tree(['tree_a/file1', 'tree_a/file2'])
330
 
        tree_a.add(['file1', 'file2'])
331
 
        os.chdir('tree_b')
332
 
        self.run_bzr(['merge', '--uncommitted', '../tree_a/file1'])
333
 
        self.failUnlessExists('file1')
334
 
        self.failIfExists('file2')
 
248
    def pullable_branch(self):
 
249
        os.mkdir('a')
 
250
        os.chdir('a')
 
251
        self.example_branch()
 
252
        os.chdir('..')
 
253
        self.run_bzr('branch a b')
 
254
        os.chdir('b')
 
255
        file('goodbye', 'wt').write('quux')
 
256
        self.run_bzr(['commit', '-m', "mode u's are always good"])
 
257
        os.chdir('../a')
335
258
 
336
259
    def pullable_branch(self):
337
260
        tree_a = self.make_branch_and_tree('a')
338
261
        self.build_tree(['a/file'])
339
262
        tree_a.add(['file'])
340
263
        self.id1 = tree_a.commit('commit 1')
341
 
 
 
264
        
342
265
        tree_b = self.make_branch_and_tree('b')
343
266
        tree_b.pull(tree_a.branch)
344
267
        file('b/file', 'wb').write('foo')
364
287
        os.chdir('tree_b')
365
288
        self.run_bzr('merge ../tree_a')
366
289
        self.assertEqual('directory', file_kind('file'))
367
 
        tree_b.revert()
 
290
        tree_b.revert([])
368
291
        self.assertEqual('file', file_kind('file'))
369
292
        self.build_tree_contents([('file', 'content_2')])
370
293
        tree_b.commit('content change')
384
307
        target.commit('empty commit')
385
308
        self.write_directive('directive', source.branch, 'target', 'rev2',
386
309
                             'rev1')
387
 
        out, err = self.run_bzr('merge -d target directive')
 
310
        self.run_bzr('merge -d target directive')
388
311
        self.failIfExists('target/a')
389
312
        self.failUnlessExists('target/b')
390
 
        self.assertContainsRe(err, 'Performing cherrypick')
391
313
 
392
314
    def write_directive(self, filename, source, target, revision_id,
393
315
                        base_revision_id=None, mangle_patch=False):
408
330
        self.write_directive('directive', source.branch, 'target', 'rev1')
409
331
        err = self.run_bzr('merge -d target directive')[1]
410
332
        self.assertNotContainsRe(err, 'Preview patch does not match changes')
411
 
        target.revert()
 
333
        target.revert([])
412
334
        self.write_directive('directive', source.branch, 'target', 'rev1',
413
335
                             mangle_patch=True)
414
336
        err = self.run_bzr('merge -d target directive')[1]
434
356
        self.run_bzr('merge -d target -r revid:rev2a branch_a')
435
357
        self.failUnlessExists('target/file1')
436
358
        self.failIfExists('target/file2')
437
 
        target.revert()
 
359
        target.revert([])
438
360
 
439
361
        # It should work if the revid has no integer revno
440
362
        self.run_bzr('merge -d target -r revid:rev2a branch_b')
441
363
        self.failUnlessExists('target/file1')
442
364
        self.failIfExists('target/file2')
443
 
 
444
 
    def assertDirectoryContent(self, directory, entries, message=''):
445
 
        """Assert whether entries (file or directories) exist in a directory.
446
 
 
447
 
        It also checks that there are no extra entries.
448
 
        """
449
 
        ondisk = os.listdir(directory)
450
 
        if set(ondisk) == set(entries):
451
 
            return
452
 
        if message:
453
 
            message += '\n'
454
 
        raise AssertionError(
455
 
            '%s"%s" directory content is different:\na = %s\nb = %s\n'
456
 
            % (message, directory, sorted(entries), sorted(ondisk)))
457
 
 
458
 
    def test_cherrypicking_merge(self):
459
 
        # make source branch
460
 
        source = self.make_branch_and_tree('source')
461
 
        for f in ('a', 'b', 'c', 'd'):
462
 
            self.build_tree(['source/'+f])
463
 
            source.add(f)
464
 
            source.commit('added '+f, rev_id='rev_'+f)
465
 
        # target branch
466
 
        target = source.bzrdir.sprout('target', 'rev_a').open_workingtree()
467
 
        self.assertDirectoryContent('target', ['.bzr', 'a'])
468
 
        # pick 1 revision
469
 
        self.run_bzr('merge -d target -r revid:rev_b..revid:rev_c source')
470
 
        self.assertDirectoryContent('target', ['.bzr', 'a', 'c'])
471
 
        target.revert()
472
 
        # pick 2 revisions
473
 
        self.run_bzr('merge -d target -r revid:rev_b..revid:rev_d source')
474
 
        self.assertDirectoryContent('target', ['.bzr', 'a', 'c', 'd'])
475
 
        target.revert()
476
 
        # pick 1 revision with option --changes
477
 
        self.run_bzr('merge -d target -c revid:rev_d source')
478
 
        self.assertDirectoryContent('target', ['.bzr', 'a', 'd'])
479
 
 
480
 
    def test_merge_criss_cross(self):
481
 
        tree_a = self.make_branch_and_tree('a')
482
 
        tree_a.commit('', rev_id='rev1')
483
 
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
484
 
        tree_a.commit('', rev_id='rev2a')
485
 
        tree_b.commit('', rev_id='rev2b')
486
 
        tree_a.merge_from_branch(tree_b.branch)
487
 
        tree_b.merge_from_branch(tree_a.branch)
488
 
        tree_a.commit('', rev_id='rev3a')
489
 
        tree_b.commit('', rev_id='rev3b')
490
 
        graph = tree_a.branch.repository.get_graph(tree_b.branch.repository)
491
 
        out, err = self.run_bzr(['merge', '-d', 'a', 'b'])
492
 
        self.assertContainsRe(err, 'Warning: criss-cross merge encountered.')
493
 
 
494
 
    def test_merge_force(self):
495
 
        tree_a = self.make_branch_and_tree('a')
496
 
        self.build_tree(['a/foo'])
497
 
        tree_a.add(['foo'])
498
 
        tree_a.commit('add file')
499
 
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
500
 
        self.build_tree_contents([('a/foo', 'change 1')])
501
 
        tree_a.commit('change file')
502
 
        tree_b.merge_from_branch(tree_a.branch)
503
 
        tree_a.commit('empty change to allow merge to run')
504
 
        self.run_bzr(['merge', '../a', '--force'], working_dir='b')
505
 
 
506
 
    def test_merge_from_submit(self):
507
 
        tree_a = self.make_branch_and_tree('a')
508
 
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
509
 
        tree_c = tree_a.bzrdir.sprout('c').open_workingtree()
510
 
        out, err = self.run_bzr(['merge', '-d', 'c'])
511
 
        self.assertContainsRe(err, 'Merging from remembered parent location .*a\/')
512
 
        tree_c.branch.set_submit_branch(tree_b.bzrdir.root_transport.base)
513
 
        out, err = self.run_bzr(['merge', '-d', 'c'])
514
 
        self.assertContainsRe(err, 'Merging from remembered submit location .*b\/')
515
 
 
516
 
    def test_remember_sets_submit(self):
517
 
        tree_a = self.make_branch_and_tree('a')
518
 
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
519
 
        self.assertIs(tree_b.branch.get_submit_branch(), None)
520
 
 
521
 
        # Remember should not happen if using default from parent
522
 
        out, err = self.run_bzr(['merge', '-d', 'b'])
523
 
        self.assertIs(tree_b.branch.get_submit_branch(), None)
524
 
 
525
 
        # Remember should happen if user supplies location
526
 
        out, err = self.run_bzr(['merge', '-d', 'b', 'a'])
527
 
        self.assertEqual(tree_b.branch.get_submit_branch(),
528
 
                         tree_a.bzrdir.root_transport.base)
529
 
 
530
 
    def test_weave_cherrypick(self):
531
 
        this_tree = self.make_branch_and_tree('this')
532
 
        self.build_tree_contents([('this/file', "a\n")])
533
 
        this_tree.add('file')
534
 
        this_tree.commit('rev1')
535
 
        other_tree = this_tree.bzrdir.sprout('other').open_workingtree()
536
 
        self.build_tree_contents([('other/file', "a\nb\n")])
537
 
        other_tree.commit('rev2b')
538
 
        self.build_tree_contents([('other/file', "c\na\nb\n")])
539
 
        other_tree.commit('rev3b')
540
 
        self.run_bzr('merge --weave -d this other -r -2..-1')
541
 
        self.assertFileEqual('c\na\n', 'this/file')
542
 
 
543
 
    def test_lca_merge_criss_cross(self):
544
 
        tree_a = self.make_branch_and_tree('a')
545
 
        self.build_tree_contents([('a/file', 'base-contents\n')])
546
 
        tree_a.add('file')
547
 
        tree_a.commit('', rev_id='rev1')
548
 
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
549
 
        self.build_tree_contents([('a/file',
550
 
                                   'base-contents\nthis-contents\n')])
551
 
        tree_a.commit('', rev_id='rev2a')
552
 
        self.build_tree_contents([('b/file',
553
 
                                   'base-contents\nother-contents\n')])
554
 
        tree_b.commit('', rev_id='rev2b')
555
 
        tree_a.merge_from_branch(tree_b.branch)
556
 
        self.build_tree_contents([('a/file',
557
 
                                   'base-contents\nthis-contents\n')])
558
 
        tree_a.set_conflicts(ConflictList())
559
 
        tree_b.merge_from_branch(tree_a.branch)
560
 
        self.build_tree_contents([('b/file',
561
 
                                   'base-contents\nother-contents\n')])
562
 
        tree_b.set_conflicts(ConflictList())
563
 
        tree_a.commit('', rev_id='rev3a')
564
 
        tree_b.commit('', rev_id='rev3b')
565
 
        out, err = self.run_bzr(['merge', '-d', 'a', 'b', '--lca'], retcode=1)
566
 
        self.assertFileEqual('base-contents\n<<<<<<< TREE\nthis-contents\n'
567
 
                             '=======\nother-contents\n>>>>>>> MERGE-SOURCE\n',
568
 
                             'a/file')
569
 
 
570
 
    def test_merge_preview(self):
571
 
        this_tree = self.make_branch_and_tree('this')
572
 
        this_tree.commit('rev1')
573
 
        other_tree = this_tree.bzrdir.sprout('other').open_workingtree()
574
 
        self.build_tree_contents([('other/file', 'new line')])
575
 
        other_tree.add('file')
576
 
        other_tree.commit('rev2a')
577
 
        this_tree.commit('rev2b')
578
 
        out, err = self.run_bzr(['merge', '-d', 'this', 'other', '--preview'])
579
 
        self.assertContainsRe(out, '\+new line')
580
 
        self.assertNotContainsRe(err, '\+N  file\n')
581
 
        this_tree.lock_read()
582
 
        self.addCleanup(this_tree.unlock)
583
 
        self.assertEqual([],
584
 
                         list(this_tree.iter_changes(this_tree.basis_tree())))
585
 
 
586
 
    def test_merge_missing_second_revision_spec(self):
587
 
        """Merge uses branch basis when the second revision is unspecified."""
588
 
        this = self.make_branch_and_tree('this')
589
 
        this.commit('rev1')
590
 
        other = self.make_branch_and_tree('other')
591
 
        self.build_tree(['other/other_file'])
592
 
        other.add('other_file')
593
 
        other.commit('rev1b')
594
 
        self.run_bzr('merge -d this other -r0..')
595
 
        self.failUnlessExists('this/other_file')